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Playground demo key · api.reefapi.com
post/email-health/v1/tls_rpt1 credit

SMTP TLS Reporting (RFC 8460) record at _smtp._tls.<domain>: the rua= report destination(s) that receive aggregate TLS-negotiation failure reports. Standalone lookup.

Working example
Parameters

The domain to inspect (a bare host like github.com; a full URL, a leading www., or a full email address are accepted and normalized to the registrable domain).

request preview
curl -X POST https://api.reefapi.com/email-health/v1/tls_rpt \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"domain":"google.com"}'

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